Try this:
do.call(f, as.list(x))
On 8/22/07, Søren Højsgaard <[EMAIL PROTECTED]> wrote:
> Dear list
> I have a function and a vector, say
> f <- function(a,b){a+b}
> x <- c(2,3)
> I want to "evaluate f on x" in the sense of computing f(x[1],x[2]). I would
> like it to be so that I can write f(x). (I know I can write a wrapper
> function g <- function(x){f(x[1],x[2])}, but this is not really what I am
> looking for). Is there a general way doing this (programmatically)? (E.g. by
> "unpacking" the elements of x and putting them in the "right places" when
> calling f...)
> I've looked under formals, alist etc. but so far without luck.
>
> Regards
> Søren
>
>
> [[alternative HTML version deleted]]
>
>
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